- the Good Stuff
- Posts
- Contrast Therapy can Boost HRV, Overnight.
Contrast Therapy can Boost HRV, Overnight.
How using Sauna and Cold Plunge combined can dramatically boost Heart Health.

In the world of health optimization, Heart Rate Variability (HRV) stands out as one of the most powerful indicators of overall well-being and longevity.
HRV provides a window into your autonomic nervous system, reflecting your body’s ability to adapt to stress and recover effectively. If you're looking to quickly improve your HRV, one of the most effective and science-backed methods is contrast therapy.
Let’s dive into why HRV is critical, what it tells us about our health, and how contrast therapy can supercharge your results.
What is HRV and Why Does It Matter?
HRV measures the variation in time between heartbeats. Contrary to what you might expect, a higher variability is a good thing—it means your body is flexible and responsive to the demands of life. When HRV is high, your nervous system is well-balanced, allowing you to switch seamlessly between states of relaxation and alertness. Low HRV, on the other hand, can indicate chronic stress, fatigue, or an underlying health issue.
Why is HRV Important for Health and Longevity?
HRV isn’t just a number; it’s a snapshot of your health. Studies have linked high HRV to:
Improved cardiovascular health: A balanced autonomic nervous system reduces the risk of heart disease.
Better stress resilience: A robust HRV means your body can recover quickly from stress.
Enhanced athletic performance: High HRV signals readiness for intense training and faster recovery.
Longevity: Research suggests that HRV can predict all-cause mortality, making it a critical biomarker for aging well.
Maybe you are reading this and have zero idea what your current biomarkers are, I would love to introduce you to Blokes and Joi. This is a service me and my wife use and it has changed the game for our health. Its not just a supplement or some program, they are a full blown health optimization company, and right now they are allowing us to share a 50% off discount code!
(Discount code MAUS for both!)
How to Improve Your HRV
There are many strategies to improve HRV, including:
Sleep optimization: Quality sleep is the foundation of nervous system recovery. Highly recommend the Eight Sleep Pod, its incredible!
Mindfulness and breathing techniques: Practices like meditation and diaphragmatic breathing enhance vagal tone. We have been listening to a sleep sound on YouTube at night (432HZ Black Screen)
Exercise and movement: Regular physical activity boosts HRV over time. Move daily, even if its just light movement, yoga, or a walk.
Nutrition and hydration: A balanced diet rich in antioxidants and proper hydration supports cellular health. We drink ReLyte every day and nothing compares.
While these methods are highly effective, they require consistent effort over time. What if you could see results more quickly? That’s where contrast therapy comes in.
The Power of Contrast Therapy
Contrast therapy alternates between cold and heat exposure, triggering a cascade of physiological benefits that can rapidly improve HRV. This powerful technique stimulates your vagus nerve, enhances circulation, and trains your nervous system to adapt to stress more efficiently.
How Contrast Therapy Works
Cold Exposure: Activates the parasympathetic nervous system and reduces inflammation. Cold plunges, ice baths, or cold showers are excellent options.
Heat Exposure: Promotes relaxation, increases blood flow, and supports detoxification. Saunas or hot baths work well here.
Alternation: Moving between these extremes creates a hormetic effect—a controlled stress that strengthens your body’s resilience.
Contrast Therapy Protocol for Maximum HRV Boost
To reap the full benefits of contrast therapy, follow this protocol:
Preparation: Ensure you’re hydrated and have a timer ready. You can use the Plunge App for a timer, its great!
Start with Heat: Spend 10-15 minutes in a sauna at 170°F (or hotter if you can handle it) or a hot bath at 104°F. This opens blood vessels and relaxes muscles.
Cold Plunge: Transition immediately to a cold plunge (55°F or lower) for 2-3 minutes. Focus on controlled, deep breathing to activate your parasympathetic response.
Repeat the Cycle: Alternate between heat and cold for 3 cycles. End with cold to maximize the anti-inflammatory benefits.
Post-Therapy Rest: Lie down in a quiet space for 10-15 minutes to allow your body to integrate the effects.
Pro Tip: Consistency is key. Aim to incorporate contrast therapy 3-4 times per week for noticeable improvements in HRV.
Why Contrast Therapy Works Quickly
The alternating hot and cold exposures create a profound impact on your nervous system. Cold exposure strengthens vagal tone and reduces sympathetic dominance (the "fight or flight" response). Heat, on the other hand, facilitates relaxation and recovery. Together, these effects lead to an immediate boost in HRV.
Research has shown that even a single session of contrast therapy can improve HRV, making it an ideal choice for those seeking quick results—whether you’re an athlete prepping for a competition or someone looking to enhance overall well-being.
Track Your Progress
To measure the impact of contrast therapy, use an HRV tracking device like a WHOOP, Oura Ring, or a smartwatch with HRV capabilities (I personally love the Garmin Fenix 7 and Eight Sleep). Monitor your baseline HRV and watch for improvements after each session.
Final Thoughts
Heart Rate Variability is a powerful metric for gauging your health and longevity. While many strategies can improve HRV over time, contrast therapy offers a fast and effective way to see immediate results. By consistently following the protocol outlined above, you can harness the power of hot and cold exposure to enhance your nervous system resilience, reduce stress, and optimize your well-being. As with everything, listen to your body. I am not a Dr, this is NOT medical advice.
Thanks for reading! If you would like to check out the YouTube video I made on this exact topic, CLICK HERE.
Otherwise, have a great day, and God bless!
Reply